Table 3. Diagnostic criteria for metabolic syndrome in Japan.

Visceral fat accumulation		•Measurement of visceral fat content by methods such as CT scanning is recommended. •The waist circumference is measured at the umbilical level in the standing position during light breath ing. If the umbilicus is displaced due to marked fat accumulation, measurement is performed at the level of the midpoint between the lower costal margin and iliac crest. •If a diagnosis of metabolic syndrome has been made, a glucose tolerance test is recommended, but it is not essential for the diagnosis. •If the examinee is receiving drug treatment for hypertriglyceridemia, hypo-HDL cholesterolemia, hypertension, or diabetes mellitus, include each in the respective category. (Evaluation Committee on Diagnostic Criteria for Meabolic Syndrome: Internal Medicine, 2005; 94: 794-809, in Japanese)
Waist circumference	Men ≥ 85 cm Women ≥ 90 cm
(The values for both men and women correspond to visceral fat ≥ 100 cm2).
Two or more of the items mentioned below in addition to the above
Hypertriglyceridemia and/or Hypo-HDL cholesterolemia	≥ 150 mg/dL ＜40 mg/dL for both men and women
Systolic blood pressure and/or Diastolic blood pressure	130 mmHg ≥ 85 nnHg
Fasting hyperglycemia	110 mg/dL